Elevator.



G. F. CHAPMAN.

ELEVATOR.

APPLICATION FILED SEPT. 3, 1913i I 1,136,773. P ented Apr. 20, 1915.

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G. 1 6 hapwnam G. F. CHAPMAN.

ELEVATOR.-

APPLICATION FILED SEPT. 3'. 1913. 1,136,773. Patented Apr. 20, 1915.

3 SHEETSSHEET 2.

v 'la! r er) Q f1 92-4 4 I. 8 hapm/avv, wi lmeooeo G. F. CHAPMAN.

ELEVATOR. APPLICATION FILED SEPT. 3, I913.

Patented Apr. 20, 1915.

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our 1'. cHArMAN, or BROQK. INDIA ELEVATOR.

Specification of Letters Patent.

Patented Apr. '20, 1915.

,Applicatioxifled September 3,1913. Serial mvsmee.

Toall whom it may concern \Be it known that-,1, GUY F. CHAPMAN,-3. citizen of the United States, residing ,at- Brook, in theceunty of Newton andState of Indiana, have invented new and useful Imrovements-in Elevators, of which the foloWing is ,a specification.

This invention relates to elevators, theobjeet, view being to produce a simple and reliable elevator for raising and dumping various ,materials .such as grain, stone, gravel, coal, saniclay, cement, plaster and t e like, the elevator being adapted to handle such materials without spillin the same and-without any possibility of' e mechanism of the elevator becoming choked with such materials.

A further object of theinvention is .to provide in combination with an elevator emodying the endless series of buckets, novel means or unlatching and relatching, dumpingand closing the doors of the buckets, whereby the material carried in the buckets may be dumped into a discharge spout connected withany desired point of delivery.

A furtherobjectof the invention is-to provide.a;construction of elevator which will admit of the ready removal and replacement orrenewal ofany part thereof which may become broken, injured or damaged.

A further object of the invention is ,to

produce a construction which will enable the invention consists in the construction,

combination and arrangement of parts, as will hereinafter be more fully described, illustrated and claimed.

In the accompanying drawings :Figure 1 is a side elevation of an elevator embodying the present invention. Fi 2 is a plan view thereof. Fi 3 is a detai vertical longitudinal section illustrating the chain tightening means. Fig. 4 is a similar view illustrating the door closing means. Fig. 5 Isa fragmentary plan view showing a portion of the elevator. Fig. 6 isadetail pers ective view of one of the buckets, showing a so the latch. Fig. 7 is a bottom plan view of the same. Fi '8 is a vertical cross section through t e elevator taken adjacent to the discharge spout.

In the preferred embodiment of this in- ,sidebarsarearranged .atan angle to the lower portions thereof in order to enable the uppermost buckets to travel in a substan .tially horizontal plane during the dumping .and door closing operations. 7

At one end offthe inclined frame of the elevator is arranged a chain shaft. 5, a similar shaft G being arranged at the opposite .end ,ofthe elevator frame. On the shaft 5 are mounted parallel sprocket wheels 7, While=corresponding sprocket wheels 8 are mounted on. the shaft 6. Passing around the sprocket wheels 7 and 8 are parallel sprocket chains 9 to. which the buckets hereinafter particularly described areattached and by which they are carried-upand down the inclined frame of theelevator.

The shaft 6. is provided .with. oppositely extending lugs 10 which are adapted to=slide or travel back andforth in grooves 11 in the inner faces ,of the parallel upper. and lower portions 12 of theside barsof the elevator frame. Extending inward from the hearings of the shaft 6 are arms 13 connected to runners 14 which also travel in thegrooves 11 referred-to, each ,of the runners .14 being provided with a stem15 around smooth running of the chains over the sprocket wheel thereby avoidingsudden jars and vibrations which might otherwise .be imparted to the .huckets hereinafter described. A drive shaft 18 is journaled in the oppositely; located runners "'14 and has 4 fast thereona hand pulley l9adapted to be driven by a belt from any suitablemotive power. On the-opposite-end of the shaft 18 is aspurgear wheel 20 which meshes with a corresponding gear wheel 21 fast on the adjacent end of the shaft 6, whereby mo tion is imparted to the shaft 6 and the outward movement of the bearings 22 beinglimitedby nuts 27 on the bolts 25. Coiled tension springs 28 are placed around the bolts'25 and interposed between the part 26 of the frame and the bearings 22, said springs serving to keep the chains 9 taut. T

An endlessseries ofbuckets 29 is carried b the chain, each of said buckets being pre erably in the form of a frustum of a pyra: mid, all of the sides of each bucket convergingand sloping toward a door 30 which forms the bottom of the bucket when the latter is traveling along the top run of the chain. The door 30 is hinged to the bottom of the bucket along the advance edge as shown at 31 and is normally held closed by a spring latch 32 of peculiar construe j tion. The latch 32 is formedof spring wire.-

and is provided intermediate its ends with a spring coil 33, one endof .thewire being extended away from said coil and fastened to the bottom ofthe "bucket at 34. The

other end of the wire is extended away from the coil and formed with a lip 35 which normally engages under the door 30 and holds the same closed; The wire of which the latch is formed is then bent laterally and upwardly to embrace the edge of the bucket and form a stop 36 for limiting the inward swinging movement of the latch. The latch is then extended outwardly to' one side of. the bucket to-form an operating arm 37, the

said'arm of the latch being adapted to be "tripped automatically by means to be described.

' 3.8 designates a discharge spout arranged under the top run of the chain and extend-' ing laterally to one side as shown in 8 so as todischarge at one side of the elevator' frame. The top of',the spout 38 is left open so that each of the buckets may dump its contents in the same aftenit arrives in line therewith and above the same.

At a point in advance of the spout 38, a trip arm 39 is mounted onthe elevator frame, said arm having a hook, the extremity of which is adapted to engage the arm 37 of the latch as the bucket moves toward the spout 38,the said trip arm 39 being so located that it trips'the latch and allows the door 30 of the bucket to fall just as thebucket arrives over the spout 38. As

' the bucket continues to move onward, the

' pendent bottom 30 thereof comes into contact with a door closing roller 40 and just the arm 37 of the latch comes into contact with another trip arm 41 which acts to again open the latch just as the door is being fully closed'by the roller 40. As soon as the arm 37 snaps by the arm 41, the latch closes quickly and engages and supports the bottom'door 30 of the bucket-29.

The roller 40 which operates to close the door is journaled in the upper end of a vertically adjustable-post 42 fastened to the frame by one or more bolts 43 by the loosening of which the roller 40 may be adjusted up and down or toward and away from the path of movement of the door 30 when inits closed position, thus enabling the door to be closed sooner or later in accordance with the position of the latch tripping arm 41. It is also desirable to provide means for adjusting the, trip arm 41 so that it will operate on the latch at-the proper time to admit'of thecompleteclosing of thedoor 30 preparatory to resetting the latch. 7

'Each of the buckets 29 is provided, on the bottom thereof with lugs 44 towhich, the

chains are connected. The top run of the chain is supported at intervals by rollers'45'journaled on the inclined elevator frame and lying under the .top runs of the sprocket chains as shown.

These rollers 'preventthe top runs of the chainsfrom sagging and permitting the buckets to tilt.

46 designates a-filling hopper connected to the elevator frame by supporting legs 47,.

the material being discharged from said hopper into the buckets 29 as they successively pass beneath -said-hopper. Y

From the foregoing des'crlption it will be seenthat the chain of buckets operates continuously, the buckets being carried beneath thehopper 46 and being successively filled.

Upon reaching the discharge spout 38, the

door. of each bucket is unlatched and allowed to, drop thus dumping the contents into the therein and that-more or less tension may be, -imparted to the chains by the adjustment of the nuts 27. The entire operation of'the elevator is automatic and on account of the manner in which the elevator as a whole is constructed, it will be apparent that the parts thereof may be readily disassociated for repair or replacement with a minimum amount of labor and in a short period of time.

What I claim is:

In an elevator of the class described, a bucket, a hinged drop door forming the bottom of said bucket, a door latch on said bucket consisting of a spring fastened at one end to the bucket and having its free end extended to form an arm projecting laterally and horizontally from one side of said bucket, and stationary devices cooperating with said latch arm operating automatica1ly and successively to unlatch said GUY F. CHAPMAN.

Witnesses:

J. A. SELL EMANUEL Burr. 

